The Opposition has 51 per cent support after preferences, compared to the Coalition’s 49 per cent.

Scott Morrison remains preferred Prime Minister by a comprehensive margin, but Bill Shorten’s popularity has increased two points to 37 per cent compared with a one-point drop to 45 per cent for Mr Morrison.

Both leaders are campaigning in Western Australia, where they will face-off for their first election debate later tonight.

The poll also shows support for Clive Palmer’s United Australia Party is up, holding five per cent of the primary vote.